Battery pack

Abstract

A battery pack including one or more battery modules, each battery module including one or more battery cells; a cover for accommodating the one or more battery modules, and a circulative fluid channel through which a cooling fluid flows, the circulative fluid channel being associated with the cover.

What is claimed is: 
     
       1. A battery pack, comprising:
 one or more battery modules, each battery module including one or more battery cells; 
 a cover for accommodating the one or more battery modules, the cover having an exterior surface; 
 a holder detachably coupled to the cover, the holder including a fluid tank and a pump, the holder supporting the one or more battery modules from below, the one or more battery modules extending upwardly from the holder, the cover surrounding all parts of the one or more battery modules that are above the holder; and 
 a circulative fluid channel through which a cooling fluid flows, the circulative fluid channel being associated with the cover, being coupled to the fluid tank and the pump, and having a channel length, a majority of the channel length disposed outside the holder and inside the exterior surface of the cover. 
 
     
     
       2. The battery pack as claimed in  claim 1 , wherein the cover includes:
 a first cover facing outward and including the exterior surface of the cover; and 
 a second cover disposed within the first cover and spaced apart from the first cover. 
 
     
     
       3. The battery pack as claimed in  claim 2 , wherein:
 the holder and the cover enclose the one or more battery modules therebetween, and 
 the circulative fluid channel is between the first cover and the second cover such that the cooling fluid is flowable from the fluid tank and back to the fluid tank through the circulative fluid channel. 
 
     
     
       4. The battery pack as claimed in  claim 1 , wherein the circulative fluid channel contacts an inner surface of the cover. 
     
     
       5. The battery pack as claimed in  claim 1 , wherein the circulative fluid channel is bent on an inner surface of the cover. 
     
     
       6. The battery pack as claimed in  claim 1 , wherein the holder supports the one or more battery modules from one surface of the one or more battery modules. 
     
     
       7. The battery pack as claimed in  claim 1 , wherein:
 the fluid tank is detachably coupled to a first opening of the circulative fluid channel, the fluid tank being configured to contain the cooling fluid; and 
 the pump is detachably coupled to a second opening of the circulative fluid channel, the pump being configured to provide the cooling fluid in the fluid tank to the circulative fluid channel through the second opening, the fluid tank being configured to receive the cooling fluid from the circulative fluid channel through the first opening, wherein decoupling the cover from the holder simultaneously decouples the first and second openings of the circulative fluid channel from the fluid tank and the pump, respectively. 
 
     
     
       8. The battery pack as claimed in  claim 7 , wherein the holder supports the one or more battery modules from under one surface of the one or more battery modules, and the holder encloses the fluid tank and the pump therein. 
     
     
       9. The battery pack as claimed in  claim 1 , wherein the cooling fluid includes air, water, a refrigerant, or ethanol and glycerin. 
     
     
       10. The battery pack as claimed in  claim 1 , wherein:
 the one or more battery cells of each of the one or more battery modules are stacked in a first direction, and the one or more battery modules are arranged along second and third directions different from the first direction, and 
 the circulative fluid channel is bent to extend as one continuous channel along each of the first, second, and third directions so as to be adjacent to sides of each of the one or more battery modules. 
 
     
     
       11. A battery pack, comprising:
 one or more battery modules, each battery module including one or more battery cells; 
 at least one supporting frame having at least one surface on which the one or more battery modules are stacked, 
 a first fluid channel through which a cooling fluid flows and having a first fluid channel length, a majority of the first fluid channel length being in the at least one supporting frame; 
 a cover for accommodating the one or more battery modules and the at least one supporting frame, the cover having an exterior surface; 
 a holder detachably coupled to the cover, the holder including a fluid tank and a pump, the holder supporting the one or more battery modules from below, the one or more battery modules extending upwardly from the holder, the cover surrounding all parts of the one or more battery modules that are above the holder; and 
 a second fluid channel through which the cooling fluid flows, the second fluid channel being associated with the cover, being coupled to the fluid tank and the pump, and having a second channel length, a majority of the second channel length disposed outside the holder and inside the exterior surface of the cover. 
 
     
     
       12. The battery pack as claimed in  claim 11 , wherein the first fluid channel and the second fluid channel are connected to each other. 
     
     
       13. The battery pack as claimed in  claim 11 , wherein the cover includes:
 a first cover facing outward and including the exterior surface of the cover; and 
 a second cover disposed within the first cover and spaced apart from the first cover. 
 
     
     
       14. The battery pack as claimed in  claim 13 , wherein:
 the holder and the cover enclose the one or more battery modules therebetween, and 
 the second fluid channel is between the first cover and the second cover such that the cooling fluid is flowable from the fluid tank and back to the fluid tank through the second fluid channel. 
 
     
     
       15. The battery pack as claimed in  claim 11 , wherein the second fluid channel contacts an inner surface of the cover. 
     
     
       16. The battery pack as claimed in  claim 11 , wherein the second fluid channel is bent on an inner surface of the cover. 
     
     
       17. The battery pack as claimed in  claim 11 , wherein the holder supports the one or more battery modules from one surface of the one or more battery modules. 
     
     
       18. The battery pack as claimed in  claim 11 , further comprising:
 the fluid tank is detachably coupled to a first opening of the second fluid channel, the fluid tank being configured to contain the cooling fluid; and 
 the pump is detachably coupled to a second opening of the second fluid channel, the pump being configured to provide the cooling fluid in the fluid tank to the second fluid channel through the second opening, the fluid tank being configured to receive the cooling fluid from the second fluid channel through the first opening, wherein decoupling the cover from the holder simultaneously decouples the first and second openings of the second fluid channel from the fluid tank and the pump, respectively. 
 
     
     
       19. The battery pack as claimed in  claim 18 , wherein the holder supports the one or more battery modules from under one surface of the one or more battery modules, and the holder encloses the fluid tank and the pump therein. 
     
     
       20. The battery pack as claimed in  claim 18 , further comprising:
 a plurality of supporting frames, and 
 a distributor connected to a plurality of first fluid channels of the plurality of supporting frames, to the second fluid channel, and to the pump, the distributor being configured to distribute and provide the cooling fluid to the plurality of first fluid channels and to the second fluid channel. 
 
     
     
       21. The battery pack as claimed in  claim 11 , wherein the cooling fluid includes air, water, a refrigerant, or ethanol and glycerin. 
     
     
       22. A battery pack that effects heat dissipation by way of a cooling fluid, the battery pack comprising:
 one or more battery modules, each battery module including one or more battery cells; 
 a cover for accommodating the one or more battery modules, the cover having an exterior surface; 
 a holder detachably coupled to the cover, the holder including a fluid tank and a pump, the holder supporting the one or more battery modules from below, the one or more battery modules extending upwardly from the holder, the cover surrounding all parts of the one or more battery modules that are above the holder; and 
 a circulative fluid channel, the circulative fluid channel being associated with the cover, being coupled to the fluid tank and the pump, and having a channel length, a majority of the channel length disposed outside the holder and inside the exterior surface of the cover.